Updated November 11, 2018 by Christopher Thomas

The 6 Best Window Insulation Kits

video play icon

This wiki has been updated 11 times since it was first published in November of 2018. If you’ve got old or drafty windows, chances are you’re paying a bundle to heat your home every winter. Insulation kits are an affordable way to save energy and significantly reduce your utility bills by hundreds of dollars per year. Here we list a variety of options geared toward those who are experienced with sealing their homes as well as anyone trying it for the very first time. When users buy our independently chosen editorial selections, we may earn commissions to help fund the Wiki.

1. 3M 5-Window

2. Duck Brand

3. Frost King Thermwell

Editor's Notes

November 09, 2018:

While there are relatively few top options on the market, a handful of kits received high marks, most of them available from trusted brands. Included one long, wide roll for those who prefer to do their own cutting or who have non-standard size windows.

4. Duck Max

5. M-D Building Shrink and Seal

6. Frost King


Christopher Thomas
Last updated on November 11, 2018 by Christopher Thomas

Building PCs, remodeling, and cooking since he was young, quasi-renowned trumpeter Christopher Thomas traveled the USA performing at and organizing shows from an early age. His work experiences led him to open a catering company, eventually becoming a sous chef in several fine LA restaurants. He enjoys all sorts of barely necessary gadgets, specialty computing, cutting-edge video games, and modern social policy. He has given talks on debunking pseudoscience, the Dunning-Kruger effect, culinary technique, and traveling. After two decades of product and market research, Chris has a keen sense of what people want to know and how to explain it clearly. He delights in parsing complex subjects for anyone who will listen -- because teaching is the best way to ensure that you understand things yourself.


Thanks for reading the fine print. About the Wiki: We don't accept sponsorships, free goods, samples, promotional products, or other benefits from any of the product brands featured on this page, except in cases where those brands are manufactured by the retailer to which we are linking. For more information on our rankings, please read about us, linked below. The Wiki is a participant in associate programs from Amazon, Walmart, Ebay, Target, and others, and may earn advertising fees when you use our links to these websites. These fees will not increase your purchase price, which will be the same as any direct visitor to the merchant’s website. If you believe that your product should be included in this review, you may contact us, but we cannot guarantee a response, even if you send us flowers.